What happened

The space shuttle Challenger was ready to launch on the morning of Tuesday, January 28, 1986.

Prepared to launch

This was a non-trivial flight.

The crew

The night before the launch there was a 3 hour teleconference between Morton Thoikol, Marshall Space Flight Center, and Kennedy Space Center. The subject of the call was the \(31^\circ\)F forecast for the next morning.

The O-rings failed # What should have happened